[PATCH 1/7] xfs: group quota should return EDQUOT when prj quota enabled

[Eric Sandeen <sandeen@redhat.com>]

Long ago, group & project quota were mutually exclusive, and so
when we turned on XFS_QMOPT_ENOSPC ("return ENOSPC if project quota
is exceeded") when project quota was enabled, we only needed to
disable it again for user quota.

When group & project quota got separated, this got missed, and as a
result if project quota is enabled and group quota is exceeded, the
error code returned is incorrectly returned as ENOSPC not EDQUOT.

Fix this by stripping XFS_QMOPT_ENOSPC out of flags for group
quota when we try to reserve the space.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 fs/xfs/xfs_trans_dquot.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/xfs/xfs_trans_dquot.c b/fs/xfs/xfs_trans_dquot.c
index d1b9869..2c3557a 100644
--- a/fs/xfs/xfs_trans_dquot.c
+++ b/fs/xfs/xfs_trans_dquot.c
@@ -758,7 +758,8 @@
 	}
 
 	if (gdqp) {
-		error = xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos, flags);
+		error = xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos,
+					(flags & ~XFS_QMOPT_ENOSPC));
 		if (error)
 			goto unwind_usr;
 	}
-- 
1.8.3.1